Rolling harrow



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7 (No Model.)

A. R. ANDERSON.

. ROLLING HARROW.

Pate I nventor.

Attorney.

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-A. R. ANDERSON. ROLLING HARROW.

Attorney.

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'WiL esses: I Inventor. 2M L I V UNITEDFSTATES:

PATENT i'OFFIcB I AUGUST R. ANDERSON, OF CAMERON, IDAHO.

- ROLLING HARROW.

SPECIFICATION forming part of Letters Patent No. 570,532, dated November 3, 1896.

Application filed June 22, 1896. Serial No. 596,477. (No model.)

To all whom it may concern.-

Be it known that I, AUGUST R. ANDERSON, a citizen of the United States, residing at ameron, in the county of Nez Perces and State of Idaho, have invented certain new and useful Improvements in Rolling Harrows and I do declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has relation to rolling harrows, and the object is to produce a device of this kind that will be simple and cheap in construction and reliable and practical in operation and adapted to thoroughly break up and disintegrate the soil, leaving it in condition for planting or sowing and to these ends the novelty consists in the construction, combination,and arrangement of the several parts of the same, as will be hereinafter more fully described, and particularly pointed out in the claim.

In the accompanying drawings the same numerals of reference indicate the same parts of the invention.

Figure 1 is a perspective view of my improved rolling harrow. Fig. 2 is a transverse section. Fig. 3 is a longitudinal section through the machine. Fig. 4 is an elevation of the left-hand side of the machine, and Fig. 5 is a detail of one of the teeth.

1, 2, 3, and 4 represent the rectangular frame of the machine, the tongue being attached in the usual manner to the front piece 1 of the frame.

5,6,7 ,and 8 are the carrying-wheels mounted on the independent crank-axles 5, 6, 7, and 8, which are pivoted in bearing-boxes 9, bolted to the ends of the front and rear pieces 1 and 4 of the frame. The rear axles 7 and 8 are bent upwardly inside of the frame and form a handlever 10, each one of which is provided with a parallel sliding gravity-dog 12, the lower end of which engages the teeth on a stationary segmental rack 13, secured to the side pieces. and 6 are also bent upwardly, forming levers 14, the upper ends of which are connected by pitmen to the hand-levers 10, so that each front lever is simultaneously operated and held in position by the corresponding hand- The inner end of the front axles 5.

of the machine and immediately back of it. The object of mounting the machine on these crank-axles is to enable the operator to raise the frame on the wheels so .that the harrowteeth will be entirely clear of the ground in going from place to place and when at work in the field to so adjust the teeth that they will penetrate the ground to a greater or less extent, according as it is desired to cultivate it shallow or deep, by raising or lowering the wheels, as above described.

In the side pieces 2 and 3 are journaled three shafts 16, 17, and 18, the forward one 16 being provided with forwardly-curved cuttingteeth 19, and the two remaining shafts are provided with forwardly-curved harrowingteeth 20, rectangular in form and diamondshaped in cross-section. All of the teeth are provided with screw-threaded shanks 21,

which screw firmly into the shaft and are rigidly though removably secured thereto by a washer 22 and a lock-nut 23, as shown in the detail in Fig. 6. The arrangement of the teeth upon their respective shafts is purely arbitrary and can be varied at will to suit the operator and the particular use to which the machine is being used for the time being.

The forward shaft 16 is journaled in boxes 24 24 in the sides of the frame, and these boxes are provided with slots 25, through which bolts 26 pass to adjustably secure the boxes to the frame.

The shaft 17 is mounted in similar though stationary boxes 27 secured to the sides, and the shaft 18 is likewise mounted in adjustable boxes 28, similar to those on the shaft 17. The outer ends of the shaft 17 extend through the boxes 27, and they are provided with sprocketwheels 29 and 30, and from the sprocket-wheel 29 a sprocket-chain 31 extends to a similar sprocket-wheel 32 on one end of the shaft 17, while from the sprocketwheel a similar chain extends to a sprocket -wheel 34 on the same end of the shaft 19, the object being to rotate all three shafts simultaneously in the same direction.

In practice I prefer to make the sprocketwheel 32 of a larger diameter, as it is the driving-wheel, the teeth on the shaft 17 being the first to take the ground, and consequently they drive all the rest; and by maklever located on the rear axle on the same side in g this particular driving-wheel the largest it causes the two following shafts to rotate much faster and more effectually harrow the ground and thoroughly break up and disintegrate the soil, thereby completing and finishing the work begun by the teeth on the first shaft and leaving the ground in perfect garden condition.

35 and 36 are covers hinged to the side pieces 2 and 3 and they form a protecting housing for the sprocket wheels, chains, &c., and also a convenient receptacle for the wrenches, oil-can, and spare teeth to replace any that may be damaged while the machine is at work in the field.

Although I have specifically described the construction and relative arrangement of the several elements of my invention, I do not desire to be confined to the same, as such changes or modifications may be made as clearly fall within the scope of my invention without departing from the spirit thereof.

Having thus fully described my invention,

what I claim as new and useful, and desire to secure by Letters Patent of the United States,

The rectangular frame comprising the side pieces upon which are mounted the bent axles, the carrying-wheels mounted on said axles, and the levers adapted to adjust the wheels on one side independently of the wheels on the opposite side, in combination with the toothed shafts 16 17 and 18, the opposite ends of. which are provided with sprocket-wheels connected by sprocket-chains, and having their said ends, their sprocket wheels and chains protected by hinged covers secured to the said side pieces 2 and 3, substantially as and for the purpose set forth.

In testimony whereof I hereunto affix my signature in presence of two witnesses.

AUGUST R. ANDERSON.

IVitnesses:

FRED BREGMAN, NELs I. TENING. 

